ciao-cli: Adjust workload validation to support resizing
ciao-cli: Adjust workload validation to support resizing

Now that volumes that are derived from image and volume sources can be
resized adjust the ciao-cli workload validation to allow specifying the
size.

Fixes: #1271

Signed-off-by: Rob Bradford <c49e1dc14cd52e2644816db47123896e0ac79025@intel.com>

mcastelino/ciao,ciao-project/ciao,tpepper/ciao,kaccardi/ciao,mcastelino/ciao,kaccardi/ciao,tpepper/ciao,markdryan/ciao,markdryan/ciao,rbradford/ciao,mcastelino/ciao,rbradford/ciao,tpepper/ciao,01org/ciao,01org/ciao,ciao-project/ciao